How do you change the age of your players?

okay i tried to change the age of pau Gasol he's 31 right now in my game but i accidently deleted his birth date it was 19800706, when i tried to put it back it wont work now his age shows up as 2013 xD
anyone no how to change it back and change my player's age?

Normally, all you need to do is change a player's date of birth. This will of course mean inaccurate bio data but it will achieve the desired effect.

If restoring the original value is not correcting the problem then I would suggest restoring from a backup and starting again.

ight i'll try ty for your help